研究目的
To reduce the incidence of post-laser-assisted in situ keratomileusis (LASIK) flap striae using a novel flap double twist technique.
研究成果
The flap double twist technique effectively prevented post-LASIK flap striae in all 161 eyes studied, with no striae observed at 1 hour, 24 hours, and 1 week postoperatively. This suggests it is a successful method for reducing a common complication of LASIK surgery, particularly for higher ablation cases, and does not require special instruments.
研究不足
The study was conducted by a single surgeon, which may limit generalizability. It did not compare the technique with other methods or include long-term follow-up beyond one week. The technique might be time-consuming and its applicability to femtosecond flaps is uncertain.
1：Experimental Design and Method Selection:
A prospective study was conducted on 161 eyes of 87 subjects undergoing LASIK refractive surgery. The novel flap double twist technique was applied to prevent flap striae, involving specific steps of floating, stroking, twisting, and repositioning the flap with dehydration.
2：Sample Selection and Data Sources:
Subjects were patients with myopic, hyperopic, and astigmatic refractive errors. Data included preoperative corneal parameters and operative details.
3：List of Experimental Equipment and Materials:
Equipment included WaveLight EX500 laser, Moria Evolution 3 Microkeratome, Merocel microsponge, Tomey anterior segment analyzer (TMS-5), slit lamp, and topical medications (1% Econopred Plus).
4：Experimental Procedures and Operational Workflow:
The technique involved floating and irrigating the flap, applying pressure with a wet microsponge, twisting the flap in two opposite directions to dehydrate it, repositioning with horizontal pressure, and using steroid drops and a bandage contact lens postoperatively.
5：Data Analysis Methods:
Postoperative examinations at 1 hour, 24 hours, and 1 week were conducted to check for striae incidence, with descriptive statistics for subject demographics and corneal parameters.
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